married Jacques d'Aunay, Sieur de . The fief of Bellay was located near Saumur in Anjou.

He is said to have gotten his education in Paris. It is also speculated, however, that he studied at the University of Angers. He had a licenciate in utroque iure (Civil Law and Canon Law). He was a priest of the diocese of Le Mans. He was appointed Bishop of Bayonne by King Francis I, an appointment was approved by Pope Clement VII on